CodeIgniter HMVC error after updating PHP to PHP 7

After updating 5.6 to PHP 7. I was using HMVC implementation of Code Igniter and PHP upgrade started throwing following errors:-

  1. A PHP Error was encountered Severity: Warning

    Message: Declaration of MX_Loader::library($library, $params = NULL, $object_name = NULL) should be compatible with CI_Loader::library($library = ”, $params = NULL, $object_name = NULL)

    Filename: MX/Loader.php

    Line Number: 143

  2. A PHP Error was encountered Severity: Warning

    Message: Declaration of MX_Loader::helper($helper) should be compatible with CI_Loader::helper($helpers = Array)

    Filename: MX/Loader.php

    Line Number: 0

  3. A PHP Error was encountered Severity: Warning

    Message: Declaration of MX_Loader::helpers($helpers) should be compatible with CI_Loader::helpers($helpers = Array)

    Filename: MX/Loader.php

    Line Number: 0

  4. A PHP Error was encountered Severity: Warning

    Message: Declaration of MX_Loader::language($langfile, $lang = ”, $return = false) should be compatible with CI_Loader::language($file = Array, $lang = ”)

    Filename: MX/Loader.php

    Line Number: 0

  5. A PHP Error was encountered Severity: Warning

    Message: Declaration of MX_Loader::_ci_get_component($component) should be compatible with & CI_Loader::_ci_get_component($component)

    Filename: MX/Loader.php

    Line Number: 0

  6. A PHP Error was encountered Severity: Warning

    Message: Declaration of MX_Lang::load($langfile, $lang = ”, $return = false, $_module = NULL) should be compatible with CI_Lang::load($langfile = ”, $idiom = ”, $return = false, $add_suffix = true, $alt_path = ”)

    Filename: MX/Lang.php

    Line Number: 70

  7. A PHP Error was encountered Severity: Notice

    Message: Only variables should be assigned by reference

    Filename: core/Loader.php

    Line Number: 257

 

 

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